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/***********************************************************************
* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
* *
* This file is part of EvtGen. *
* *
* EvtGen is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* EvtGen is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with EvtGen. If not, see <https://www.gnu.org/licenses/>. *
***********************************************************************/
#ifndef EVTEXTERNALGENFACTORY_HH
#define EVTEXTERNALGENFACTORY_HH
#include "EvtGenModels/EvtAbsExternalGen.hh"
#include <map>
// Description: A factory type method to create engines for external physics
// generators like Pythia.
class EvtExternalGenFactory {
public:
enum genId
{
PythiaGenId = 0,
PhotosGenId,
TauolaGenId
};
static EvtExternalGenFactory* getInstance();
EvtAbsExternalGen* getGenerator( int genId = 0 );
void initialiseAllGenerators();
void definePythiaGenerator( std::string xmlDir, bool convertPhysCodes,
bool useEvtGenRandom = true );
void definePhotosGenerator( std::string photonType = "gamma",
bool useEvtGenRandom = true );
void defineTauolaGenerator( bool useEvtGenRandom = true );
//methods to add configuration commands to the pythia generators
//void addPythiaCommand( std::string generator, std::string module, std::string param, std::string value);
//void addPythia6Command(std::string generator, std::string module, std::string param, std::string value);
protected:
EvtExternalGenFactory();
~EvtExternalGenFactory();
typedef std::map<int, EvtAbsExternalGen*> ExtGenMap;
typedef std::map<int, std::map<std::string, std::vector<std::string>>> ExtGenCommandMap;
private:
EvtExternalGenFactory( const EvtExternalGenFactory& ){};
ExtGenMap _extGenMap;
ExtGenCommandMap _extGenCommandMap;
};
#endif

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